--- lbbs/src/common.c	2004/10/19 17:10:39	1.1
+++ lbbs/src/common.c	2025/06/26 12:17:02	1.35
@@ -1,32 +1,130 @@
 /***************************************************************************
-                          common.c  -  description
-                             -------------------
-    begin                : Mon Oct 18 2004
-    copyright            : (C) 2004 by Leaflet
-    email                : leaflet@leafok.com
+						  common.c  -  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.                                   *
  *                                                                         *
  ***************************************************************************/
 
-//Global declaration for enviroment
-char app_home_dir[256];
+#include "common.h"
+#include "log.h"
+#include "menu.h"
+#include <signal.h>
+#include <string.h>
+#include <time.h>
+#include <sys/types.h>
 
-//Global declaration for sockets
-int socket_server;
+// File loader
+const char *data_files_load_startup[] = {
+	DATA_WELCOME,
+	DATA_REGISTER,
+	DATA_GOODBYE,
+	DATA_LICENSE,
+	DATA_COPYRIGHT,
+	DATA_LOGIN_ERROR,
+	DATA_ACTIVE_BOARD,
+	DATA_READ_HELP,
+	VAR_BBS_TOP};
+int data_files_load_startup_count = 9; // Count of data_files_load_startup[]
+
+// Global declaration for sockets
+int socket_server[2];
 int socket_client;
-char hostaddr_server[50];
-char hostaddr_client[50];
-int port_server;
+char hostaddr_client[IP_ADDR_LEN];
 int port_client;
 
-//Global declaration for database
-char DB_host[256];
-char DB_username[50];
-char DB_password[50];
+// SSHv2
+int SSH_v2 = 0;
+ssh_bind sshbind;
+ssh_session SSH_session;
+ssh_channel SSH_channel;
+
+// Global declaration for system
+volatile int SYS_server_exit = 0;
+volatile int SYS_child_process_count = 0;
+volatile int SYS_child_exit = 0;
+volatile int SYS_conf_reload = 0;
+
+static const char *weekday[] = {
+	"天", "一", "二", "三", "四", "五", "六"};
+
+// Common function
+const char *get_time_str(char *s, size_t len)
+{
+	time_t curtime;
+	struct tm local_tm;
+
+	time(&curtime);
+	localtime_r(&curtime, &local_tm);
+	size_t j = strftime(s, len, "%b %d %H:%M 星期", &local_tm);
+
+	if (j == 0 || j + strlen(weekday[local_tm.tm_wday]) + 1 > len)
+	{
+		return NULL;
+	}
+
+	strncat(s, weekday[local_tm.tm_wday], len - 1 - j);
+
+	return s;
+}
+
+void sig_hup_handler(int i)
+{
+	SYS_conf_reload = 1;
+}
+
+void sig_term_handler(int i)
+{
+	SYS_server_exit = 1;
+}
+
+void sig_chld_handler(int i)
+{
+	SYS_child_exit = 1;
+}
+
+const char *ip_mask(char *s, int level, char mask)
+{
+	char *p = s;
+
+	if (level <= 0)
+	{
+		return s;
+	}
+	if (level > 4)
+	{
+		level = 4;
+	}
+
+	for (int i = 0; i < 4 - level; i++)
+	{
+		p = strchr(p, '.');
+		if (p == NULL)
+		{
+			return s;
+		}
+		p++;
+	}
+
+	for (int i = 0; i < level; i++)
+	{
+		*p = mask;
+		p++;
+		if (i < level - 1)
+		{
+			*p = '.';
+			p++;
+		}
+	}
+	*p = '\0';
+
+	return s;
+}