--- lbbs/src/common.c	2025/04/28 12:45:57	1.10
+++ lbbs/src/common.c	2025/06/17 01:24:21	1.31
@@ -1,129 +1,141 @@
 /***************************************************************************
 						  common.c  -  description
 							 -------------------
-	begin                : Mon Oct 18 2004
-	copyright            : (C) 2004 by Leaflet
-	email                : leaflet@leafok.com
+	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.                                   *
  *                                                                         *
  ***************************************************************************/
 
+#define _POSIX_C_SOURCE 200112L
+
+#include "common.h"
+#include "log.h"
 #include "menu.h"
+#include <string.h>
 #include <time.h>
+#include <signal.h>
 #include <sys/types.h>
-#include <sys/wait.h>
-
-// Version information
-char app_version[256] = "LBBS-devel version 1.0";
 
-// Global declaration for enviroment
-char app_home_dir[256];
-char app_temp_dir[256];
+// 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;
+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];
-char DB_database[50];
-char DB_timezone[50];
+// SSHv2
+int SSH_v2 = 0;
+ssh_bind sshbind;
+ssh_session SSH_session;
+ssh_channel SSH_channel;
 
 // Global declaration for system
-int SYS_exit;
-int SYS_child_process_count;
+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;
+volatile int SYS_data_file_reload = 0;
+volatile int SYS_section_list_reload = 0;
 
-// Common function
-const char *
-str_space(char *string, int length)
-{
-	int i;
-	for (i = 0; i < length; i++)
-	{
-		string[i] = ' ';
-	}
-	string[length] = '\0';
-	return string;
-}
+static const char *weekday[] = {
+	"天", "一", "二", "三", "四", "五", "六"};
 
-const char *
-get_time_str(char *string, size_t length)
+// Common function
+const char *get_time_str(char *s, size_t len)
 {
-	char week[10], buffer[256];
 	time_t curtime;
-	struct tm *loctime;
-
-	curtime = time(NULL);
-	loctime = localtime(&curtime);
+	struct tm local_tm;
 
-	strftime(buffer, 256, "%Y年%m月%d日%H:%M:%S ", loctime);
+	time(&curtime);
+	localtime_r(&curtime, &local_tm);
+	size_t j = strftime(s, len, "%b %d %H:%M 星期", &local_tm);
 
-	switch (loctime->tm_wday)
+	if (j == 0 || j + strlen(weekday[local_tm.tm_wday]) + 1 > len)
 	{
-	case 0:
-		strcpy(week, "星期天");
-		break;
-	case 1:
-		strcpy(week, "星期一");
-		break;
-	case 2:
-		strcpy(week, "星期二");
-		break;
-	case 3:
-		strcpy(week, "星期三");
-		break;
-	case 4:
-		strcpy(week, "星期四");
-		break;
-	case 5:
-		strcpy(week, "星期五");
-		break;
-	case 6:
-		strcpy(week, "星期六");
-		break;
+		return NULL;
 	}
-	strcat(buffer, week);
 
-	strncpy(string, buffer, length);
+	strncat(s, weekday[local_tm.tm_wday], len - 1 - j);
+
+	return s;
+}
 
-	return string;
+void sig_hup_handler(int i)
+{
+	SYS_conf_reload = 1;
+	SYS_data_file_reload = 1;
+	SYS_section_list_reload = 1;
 }
 
-void reload_bbs_menu(int i)
+void sig_term_handler(int i)
 {
-	if (reload_menu(&bbs_menu) < 0)
-		log_error("Reload menu failed\n");
-	else
-		log_std("Reload menu successfully\n");
+	struct sigaction act = {0};
+
+	SYS_server_exit = 1;
+
+	act.sa_handler = SIG_IGN;
+	sigaction(SIGTERM, &act, NULL);
 }
 
-void system_exit(int i)
+void sig_chld_handler(int i)
 {
-	SYS_exit = 1;
+	SYS_child_exit = 1;
 }
 
-void child_exit(int i)
+const char *ip_mask(char *s, int level, char mask)
 {
-	int pid;
+	char *p = s;
 
-	pid = wait(0);
+	if (level <= 0)
+	{
+		return s;
+	}
+	if (level > 4)
+	{
+		level = 4;
+	}
 
-	if (pid > 0)
+	for (int i = 0; i < 4 - level; i++)
 	{
-		SYS_child_process_count--;
-		log_std("Child process (%d) exited\n", pid);
+		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;
 }